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Conference 49.910::kav30

Title:	VAX on VMEbus: KAV30
Notice:	Could have been as fast as 68K but its a VAX!
Moderator:	CSSVMS::KAV30_SUPP

Created:	Thu Apr 18 1991
Last Modified:	Fri Aug 02 1996
Last Successful Update:	Fri Jun 06 1997
Number of topics:	159
Total number of notes:	645

72.0. "Need Logic Analyzer Hook-Up" by HELIX::PINETTE () Wed Dec 16 1992 23:01

    I need to hook a logic analyzer to the rtVAX300 module on the KAV30.
    I'm speculating there could be a commercially available connector that
    could be used between the rtVAX300 and it's board socket that would
    make the pins accessible.
    
    Has anyone done this?
    
    If so... who manufactures the beastie?

T.R	Title	User	Personal Name	Date	Lines
72.1		HERR::CROSBIE		`Thu Dec 17 1992 09:41`	8
	Hi Paul, What behaviour are you trying to investigate? Is it a KAV30 problem? The rtVAX 300 test box has 50 pin connectors that map onto the rtVAX 300 pins to allow the easy connection of a logic analyzer to the rtVAX 300. Graham
72.2	If I get the info here, I don't have to wade through connector catalogs	HELIX::PINETTE		`Thu Dec 17 1992 18:08`	15
	I want to instrument the rtVAX300 in the context of the KAV30. That means I can't use the test box. It has to be running on a KAV30. Conceptually it's very simple. In fact, the developers and/or maintainers of the rtVAX300 have had to instrument the module before during development and/or support. All I need is the name of a company that makes a connector that will allow me to plug into the KAV30 card and, in turn, permit me to plug the rtVAX300 on top of it (meanwhile making the pins available for connection to the logic analyzer.) If someone just happened to know a company to manufactured such a connector, it would save me some time.
72.3	here's what we did	AUSSIE::SULLIVAN	sw still runs on hw	`Sat Feb 13 1993 07:37`	18
	We're doing the same thing (but on a different target, not the KAV30). A colleague of mine came up with a really neat compromise. Instead of a board with connectors, he just used very short lengths of ribbon cable and IDC connectors. We needed something quickly, and it worked well. There is a cable for each 50 pin connector, and each cable has three connectors: 1 for the RTVAX, one for the logic analyser, and one for the board header. Make the cable as short as you can, and just sort of let it double up with the RTVAX sitting on top. A board with connectors designed for a particular brand of logic analyser would be really good though, to save hooking up each probe separately. We have had a few reliability problems with the connections, but that's because we rushed it! Greg.